Mercurial > hg
view tests/killdaemons.py @ 26345:2aa0dde846b4
mq: remove a mutable default argument
Mutable default arguments are know to the state of California to cause bugs. The
underlying function already handle "None" as an option value, so we do not need
to do anything else.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
---|---|
date | Thu, 24 Sep 2015 00:50:06 -0700 |
parents | 123c99034cb6 |
children | 05cb9c6f310e |
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#!/usr/bin/env python import os, sys, time, errno, signal if os.name =='nt': import ctypes def _check(ret, expectederr=None): if ret == 0: winerrno = ctypes.GetLastError() if winerrno == expectederr: return True raise ctypes.WinError(winerrno) def kill(pid, logfn, tryhard=True): logfn('# Killing daemon process %d' % pid) PROCESS_TERMINATE = 1 PROCESS_QUERY_INFORMATION = 0x400 SYNCHRONIZE = 0x00100000 WAIT_OBJECT_0 = 0 WAIT_TIMEOUT = 258 handle = ctypes.windll.kernel32.OpenProcess( PROCESS_TERMINATE|SYNCHRONIZE|PROCESS_QUERY_INFORMATION, False, pid) if handle == 0: _check(0, 87) # err 87 when process not found return # process not found, already finished try: r = ctypes.windll.kernel32.WaitForSingleObject(handle, 100) if r == WAIT_OBJECT_0: pass # terminated, but process handle still available elif r == WAIT_TIMEOUT: _check(ctypes.windll.kernel32.TerminateProcess(handle, -1)) else: _check(r) # TODO?: forcefully kill when timeout # and ?shorter waiting time? when tryhard==True r = ctypes.windll.kernel32.WaitForSingleObject(handle, 100) # timeout = 100 ms if r == WAIT_OBJECT_0: pass # process is terminated elif r == WAIT_TIMEOUT: logfn('# Daemon process %d is stuck') else: _check(r) # any error except: #re-raises ctypes.windll.kernel32.CloseHandle(handle) # no _check, keep error raise _check(ctypes.windll.kernel32.CloseHandle(handle)) else: def kill(pid, logfn, tryhard=True): try: os.kill(pid, 0) logfn('# Killing daemon process %d' % pid) os.kill(pid, signal.SIGTERM) if tryhard: for i in range(10): time.sleep(0.05) os.kill(pid, 0) else: time.sleep(0.1) os.kill(pid, 0) logfn('# Daemon process %d is stuck - really killing it' % pid) os.kill(pid, signal.SIGKILL) except OSError as err: if err.errno != errno.ESRCH: raise def killdaemons(pidfile, tryhard=True, remove=False, logfn=None): if not logfn: logfn = lambda s: s # Kill off any leftover daemon processes try: fp = open(pidfile) for line in fp: try: pid = int(line) except ValueError: continue kill(pid, logfn, tryhard) fp.close() if remove: os.unlink(pidfile) except IOError: pass if __name__ == '__main__': if len(sys.argv) > 1: path, = sys.argv[1:] else: path = os.environ["DAEMON_PIDS"] killdaemons(path)